John Gill Commentary Ezekiel 39:28

"And they shall know that I am Jehovah their God, in that I caused them to go into captivity among the nations, and have gathered them unto their own land; and I will leave none of them any more there;" — Ezekiel 39:28 (ASV)

Then shall they know that I am the Lord their God (See Gill on Ezekiel 39:22);

which caused them to be led into captivity among the Heathen ; for their sins and transgressions: and so the Targum adds, ``because they sinned before me:''

but I have gathered them into their own land ; being now penitent for their sins, and believing in the Messiah: and so the Targum, ``and now, because they are converted, I have gathered them''

and have left none of them any more there ; among the Heathen, or in the land of their enemies; everyone shall be returned to the land of Canaan, be they where they will, as when they came out of Egypt: and this is typical of the salvation of God's elect, or mystical Israel; not one of them shall be lost or perish, but all shall be brought to repentance: this again shows, that this prophecy did not respect the return of the Jews from the Babylonish captivity; since then many were left behind.